Surface modification of bulk titanium substrates for biomedical applications via low-temperature microwave hydrothermal oxidation.

ABSTRACT: Micro-to-nanoscale surface topographies of orthopaedic and dental implants can affect fluid wetting and biological response. Nanoscale features can be superimposed on microscale roughness of titanium (Ti) surfaces at high temperatures, resulting in increased osteoblast differentiation. However, high temperatures can compromise mechanical properties of the bulk material. Here, we have developed a novel low-temperature microwave hydrothermal (MWHT) oxidation process for nanomodification of microrough (SLA) Ti surfaces. Nanoscale protuberances (20 -100 nm average diameter) were generated on SLA surfaces via MWHT treatment at 200°C in H₂ O, or in aqueous solutions of H₂ O₂ or NH₄ OH, for times ranging from 1 to 40 h. The size, shape, and crystalline

SUBMITTER: Cheng A 

PROVIDER: S-EPMC7021449 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature